Nascom 2 JavaScript emulator 0.3

Help needed (2013-12-18)

Need modal switch between game mode and text mode.

Game mode is the current implementation where the focus is on
accurately simulating the physical keys. As Nascoms keyboard have
a different layout from modern keyboards, we get akwardness with
keys like :/; where on Nascom we have :/* and ;/+ keys.

In text-mode you will get a 1-1 mapping between keys pressed and
the character represented, but it may change the status of the
shift key (which breaks games that depend on shift as a key in
itself).